While on a canoe trip in Maine, I saw a group of paddlers with 3 wheelchair users, 1 per canoe with 2 assistants for each disabled person.
They had the simple fold up type wheelchairs. The portages were along a river, longest maybe 200 yds top. But rocky in spots. I wondered how they were going to transport the wheelchair paddlers?
 They had an ingenious idea that worked real well on the open but rocky portages. They had brought along a Game Carrier, that you would normally use to transport deer sized animals in the field. The handicap person sat looking backward and one guy was on the handle and another walked behind too stabilize or assist if there was any problems.
They had added a seatbelt to cart, so the user was held safe and secure. The cart folds inward and easily fit in canoe. I don't know if a cart would be with-in the BWCA rules, but wouldn't hurt too ask, if your interested.
 Not only would it make the portage a lot easier, it would extend your range as long as the portages were not too difficult?
 They make many models, including lightweight aluminum and with flat proof tires.
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